Search and target acquisition: single line of sight versus wide baseline stereo

2001 ◽  
Vol 40 (9) ◽  
pp. 1914 ◽  
Author(s):  
Garrett D. Heath
Keyword(s):  
Single Line ◽  
Line Of Sight ◽  
Target Acquisition ◽  
Wide Baseline Stereo

First Demonstration of an Acousto-Optically Modulated Quantum Cascade Laser As a Broadband, Time-Resolved Combustion Diagnostic

2018 ◽  
Author(s):  
Zachary E. Loparo ◽  
Kareem Ahmed ◽  
Subith S. Vasu ◽  
Andrey V. Muraviev ◽  
Pedro Figueiredo ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Gas Turbines ◽  
Chemical Kinetic ◽  
Single Line ◽  
Line Of Sight ◽  
Spectral Measurements ◽  
Time Resolved ◽  
Quantum Cascade ◽  
No Formation ◽  
Multiple Species

We provide the first demonstration of an acousto-optically modulated quantum cascade laser (AOM QCL) system as a diagnostic for combustion by measuring nitric oxide (NO), a highly-regulated emission produced in gas turbines. The system provides time-resolved broadband spectral measurements of the present gas species via a single line of sight measurement, offering advantages over widely used narrowband absorption spectroscopy (e.g., the potential for simultaneous multi-species measurements using a single laser) and considerably faster (> 15kHz rates and potentially up to MHz) than sampling techniques which employ FTIR or GC/MS. The developed AOM QCL system yields fast tunable output covering a spectral range of 1725–1930 cm−1 with a linewidth of 10–15 cm−1. For the demonstration experiment, the AOM QCL system has been used to obtain time-resolved spectral measurements of NO formation during the shock heating of mixture of a 10% nitrous oxide (N2O) in a balance of argon over a temperature range of 1245–2517 K and a pressure range of 3.6–5.8 atm. Results were in good agreement with chemical kinetic simulations. The system shows revolutionary promise for making simultaneous time-resolved measurements of multiple species concentrations and temperature with a single line of sight measurement.

Shock Tube Demonstration of Acousto-Optically Modulated Quantum Cascade Laser as a Broadband, Time-Resolved Combustion Diagnostic

2018 ◽  
Vol 140 (11) ◽  
Author(s):  
Zachary E. Loparo ◽  
Andrey V. Muraviev ◽  
Pedro Figueiredo ◽  
Arkadiy Lyakh ◽  
Robert E. Peale ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Gas Turbines ◽  
Chemical Kinetic ◽  
Single Line ◽  
Line Of Sight ◽  
Spectral Measurements ◽  
Time Resolved ◽  
Quantum Cascade ◽  
No Formation ◽  
Multiple Species

We provide the first demonstration of an acousto-optically modulated quantum cascade laser (AOM QCL) system as a diagnostic for combustion by measuring nitric oxide (NO), a highly regulated emission produced in gas turbines. The system provides time-resolved broadband spectral measurements of the present gas species via a single line of sight measurement, offering advantages over widely used narrowband absorption spectroscopy (e.g., the potential for simultaneous multispecies measurements using a single laser) and considerably faster (>15 kHz rates and potentially up to MHz) than sampling techniques, which employ fourier transform infrared (FTIR) or GC/MS. The developed AOM QCL system yields fast tunable output covering a spectral range of 1725–1930 cm−1 with a linewidth of 10–15 cm−1. For the demonstration experiment, the AOM QCL system has been used to obtain time-resolved spectral measurements of NO formation during the shock heating of mixture of a 10% nitrous oxide (N2O) in a balance of argon over a temperature range of 1245–2517 K and a pressure range of 3.6–5.8 atm. Results were in good agreement with chemical kinetic simulations. The system shows revolutionary promise for making simultaneous time-resolved measurements of multiple species concentrations and temperature with a single line of sight measurement.

scholarly journals The single-line-of-sight, time-resolved x-ray imager diagnostic on OMEGA

2018 ◽  
Vol 89 (10) ◽  
pp. 10G117 ◽  
Author(s):  
W. Theobald ◽  
C. Sorce ◽  
M. Bedzyk ◽  
S. T. Ivancic ◽  
F. J. Marshall ◽  
...  
Keyword(s):  
Single Line ◽  
Line Of Sight ◽  
Time Resolved ◽  
X Ray

scholarly journals Progress on the development of a single line of sight x-ray framing camera

2004 ◽  
Vol 75 (10) ◽  
pp. 4054-4056 ◽  
Author(s):  
D. K. Bradley ◽  
J. P. Holder ◽  
C. M. Damian ◽  
K. W. Piston ◽  
P. M. Bell ◽  
...  
Keyword(s):  
Single Line ◽  
Line Of Sight ◽  
X Ray ◽  
Framing Camera

Further development of a single line of sight x-ray framing camera

2003 ◽  
Vol 74 (3) ◽  
pp. 2191-2193 ◽  
Author(s):  
J. P. Holder ◽  
K. W. Piston ◽  
D. K. Bradley ◽  
P. M. Bell ◽  
A. K. L. Dymoke-Bradshaw ◽  
...  
Keyword(s):  
Single Line ◽  
Line Of Sight ◽  
X Ray ◽  
Further Development ◽  
Framing Camera

scholarly journals Simultaneous neutron and x-ray imaging of inertial confinement fusion experiments along a single line of sight at Omega

2015 ◽  
Vol 86 (4) ◽  
pp. 043503 ◽  
Author(s):  
C. R. Danly ◽  
T. H. Day ◽  
D. N. Fittinghoff ◽  
H. Herrmann ◽  
N. Izumi ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Single Line ◽  
Line Of Sight ◽  
Inertial Confinement ◽  
X Ray ◽  
X Ray Imaging ◽  
Confinement Fusion ◽  
Fusion Experiments

Wind speed and turbulence estimation with a backscatter lidar at a single line of sight

2011 ◽  
Author(s):  
Sergio Tomas ◽  
Michaël Sicard ◽  
Francesc Rocadenbosch
Keyword(s):  
Wind Speed ◽  
Single Line ◽  
Line Of Sight

scholarly journals Radial Profile Estimation of Electron Density in a Linear Plasma Device NUMBER Using a Single Line-of-Sight Signal

2021 ◽  
Vol 16 (0) ◽  
pp. 2401042-2401042
Author(s):  
Minami SUGIMOTO ◽  
Atsushi OKAMOTO ◽  
Takaaki FUJITA ◽  
Hideki ARIMOTO ◽  
Shunya HIGUCHI ◽  
...  
Keyword(s):  
Electron Density ◽  
Radial Profile ◽  
Single Line ◽  
Line Of Sight ◽  
Plasma Device ◽  
Profile Estimation ◽  
Linear Plasma
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